apply `spotlessApply` on dev environment

[Pankraz76]

By binding the spotlessApply goal on local execution, we can automatically fix formatting issues in a single Gradle build, assuming this is done for every push.

This saves both time and cloud resources by avoiding back-and-forth CI/CD cycles.

Major tools like Maven and Quarkus already follow this approach, enabling seamless integration.

Maven does auto-fix everywhere, but not in cloud of course:

Maven Parent POM Line 1415

Maven Parent POM Line 1419

Same will be done in:

• [core] add IDE agnostic configuration pmd/pmd#5651

PoC:

• apply spotlessApply on dev environment #2528